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- Question
In SQL, the CREATE VIEW command is used
Options- A. to recompile view
- B. to define a view of one or more tables or views
- C. to recompile a table
- D. to create a trigger
- E. None of the above
- Correct Answer
- to define a view of one or more tables or views
- 1. Which of the following device is used to connect two systems, especially if the systems use different protocols?
Options- A. hub
- B. bridge
- C. gateway
- D. repeater
- E. None of the above Discuss
- 2. The conference that launched the AI revolution in 1956 was held at:
Options- A. Dartmouth
- B. Harvard
- C. New York
- D. Stanford
- E. None of the above Discuss
- 3. Most current PC CAD systems are used for producing:
Options- A. solids modeling
- B. 2-D drawings
- C. circuit simulation
- D. finite element analysis
- E. None of the above Discuss
- 4. What is a common language that computers use to talk with one another on a network
Options- A. client
- B. adapter
- C. protocol
- D. operating systems
- E. None of the above Discuss
- 5. Which DOS driver is used to emulate expanded memory?
Options- A. Himem.sys
- B. EMM386.exe
- C. Mem386.sys
- D. Ramdrive.sys
- E. None of the above Discuss
- 6. All of the following tools are used for process descriptions except:
Options- A. structured english
- B. decision tables
- C. pseudocode
- D. data dictionaries
- E. None of the above Discuss
- 7. When measuring AC (Alternating Current) with a multimeter, it is important to maintain the proper polarity.
Options- A. True
- B. False Discuss
- 8. A consideration evaluated by management when planning to convert to a computer system is
Options- A. available software
- B. vender maintenance
- C. CPU size and speed
- D. All of the above
- E. None of the above Discuss
- 9. A systems theory of management includes
Options- A. the manager as the control mechanism
- B. the use of both environmental and internal information describing what should be achieved
- C. the use of objectives or standards of performance describing what is being achieved
- D. All of the above
- E. None of the above Discuss
- 10. For how many processes which are sharing common data, the Dekker's algorithm implements mutual exclusion?
Options- A. 1
- B. 2
- C. 3
- D. 4
- E. None of the above Discuss
More questions
Correct Answer: gateway
Correct Answer: Dartmouth
Correct Answer: 2-D drawings
Correct Answer: protocol
Correct Answer: EMM386.exe
Correct Answer: data dictionaries
Correct Answer: False
Correct Answer: All of the above
Correct Answer: the manager as the control mechanism
Correct Answer: 2
Explanation:
Dekker's algorithm is the first known correct solution to the mutual exclusion problem in concurrent programming. The solution is attributed to Dutch mathematician Th. J. Dekker by Edsger W. Dijkstra in his manuscript on cooperating sequential processes. It allows two threads to share a single-use resource without conflict, using only shared memory for communication.
It avoids the strict alternation of a naive turn-taking algorithm, and was one of the first mutual exclusion algorithms to be invented.
Source: http://en.wikipedia.org/wiki/Dekker's_algorithm
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